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• W4224002912 abstract "Abstract The particle density (ρ s ) is a fundamental physical property needed for calculating the soil porosity and phase distributions. While ρ s is often estimated using soil organic matter (SOM) content and particle size distribution, the specific densities of each soil component remain unclear in a subarctic agricultural setting. This study aimed to evaluate the ρ s of soils from Southwest Greenland using a three‐compartment model (3CM) based on the mixing ratio of SOM derived from loss‐on‐ignition, mineral particles <20 μm (FC), and mineral particles ≥20 μm (CC). We further evaluated the accuracy of the 3CM against pedotransfer functions (PTFs) and visible near‐infrared (vis–NIR) spectroscopic models. A total of 324 soil samples from 16 Greenlandic agricultural fields were investigated, covering a wide range in SOM content (0.021–0.602 kg kg –1 ) and clay content (0.020–0.185 kg kg –1 ). Despite their high SOM content, the Greenlandic soils exhibited relatively high ρ s (1.936–3.044 Mg m –3 ), which together with a large SOM/organic carbon ratio of 2.16 indicated a high SOM density of 1.493 Mg m –3 . The 3CM fit on all soils indicated FC and CC densities of 3.047 and 2.713 Mg m –3 , respectively, while a subset of soils ( n = 203) from the same geological setting resulted in FC and CC densities of 2.738 and 2.731 Mg m –3 . Prediction accuracy of the 3CM (RMSE = 0.067 Mg m –3 ) was similar to PTFs (RMSE = 0.068–0.070 Mg m –3 ) and better than vis–NIR spectroscopic models (RMSE = 0.091 Mg m –3 )." @default.
• W4224002912 created "2022-04-19" @default.
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• W4224002912 date "2022-06-08" @default.
• W4224002912 modified "2023-09-30" @default.
• W4224002912 title "Evaluating the particle densities of subarctic soils using pedotransfer functions and vis–NIR spectroscopy" @default.
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• W4224002912 doi "https://doi.org/10.1002/saj2.20410" @default.
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